EP0167792A1 - Circuit for detecting erroneous triggering signals for a restraint system - Google Patents

Circuit for detecting erroneous triggering signals for a restraint system Download PDF

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Publication number
EP0167792A1
EP0167792A1 EP85106768A EP85106768A EP0167792A1 EP 0167792 A1 EP0167792 A1 EP 0167792A1 EP 85106768 A EP85106768 A EP 85106768A EP 85106768 A EP85106768 A EP 85106768A EP 0167792 A1 EP0167792 A1 EP 0167792A1
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EP
European Patent Office
Prior art keywords
circuit
trigger
warning device
trigger signal
restraint system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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EP85106768A
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German (de)
French (fr)
Inventor
Bernhard Dipl.-Ing. Mattes
Eberhard Dipl.-Ing. Mausner
Wadym Dr. Dipl.-Ing. Suchowerskyj
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Robert Bosch GmbH
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Robert Bosch GmbH
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Publication date
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Publication of EP0167792A1 publication Critical patent/EP0167792A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
    • B60R21/0132—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to vehicle motion parameters, e.g. to vehicle longitudinal or transversal deceleration or speed value
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R2021/01122—Prevention of malfunction
    • B60R2021/01184—Fault detection or diagnostic circuits
    • B60R2021/01197—Warning devices

Definitions

  • the invention is based on a circuit arrangement for registering faulty trigger signals for a restraint system in a vehicle.
  • Such restraint systems usually designed as air bags or belt tensioners, are e.g. B. from US-A-3622974, US-A-3874695 and ATZ Automobiltechnische Zeitschrift 84 (1982) 2, pages 77 to 83 known.
  • the restraint system is triggered via an ignition circuit if the deceleration signal detected by at least one deceleration sensor fulfills the prescribed conditions that exist in the event of an accidental deceleration.
  • the circuit arrangement according to the invention with the characterizing features of the main claim has the advantage that faulty trigger signals from a trigger circuit caused by a delay sensor are reliably reported to the driver of the vehicle while preventing a false triggering of the restraint system.
  • FIG. 1 shows a circuit configuration of an exemplary embodiment
  • FIG. 2 shows a signal diagram to explain the mode of operation.
  • the output signal of a delay sensor 10 is fed to an evaluation circuit 11 which, in the event of an accident-related delay, supplies a trigger signal to an output amplifier 12. Its output controls two ignition devices 15, 16, the second connection of which is connected to ground. Through the ignition devices 15, 16 chemical propellant charges in restraint systems, such as. B. airbag or belt tensioner, ignited. These either inflate the airbag or tighten the belt tensioner.
  • restraint systems such as. B. airbag or belt tensioner
  • a second tripping circuit which essentially consists of a second delay sensor 17 exists, which is preferably designed as a mercury switch, as described in more detail in EP-A-22146.
  • This second delay sensor 17 has, in particular, a lower trigger threshold value and connects the voltage supply between a voltage-carrying terminal 18 and the output amplifier 12 when the threshold value is exceeded.
  • a more complex second trigger circuit can of course also occur. It is essential that the restraint system or restraint systems are triggered only when a trigger signal is generated both at the output of the evaluation circuit 11 and when the second delay sensor detects that a delay threshold has been exceeded.
  • the output of the evaluation circuit 11 is fed to an input of an AND gate 19, while the second input of the AND gate 19 is connected to the output of an inverter 13. This asks whether the second deceleration sensor 17 has responded.
  • the output of the AND gate 19 is connected via a time delay element 20 to a first input of a second AND gate 21, as well as directly to its second input.
  • the AND gate 21 is connected to the magnetic winding 23 of a relay via an OR gate 22.
  • the magnetic winding 23 controls a changeover contact 24 of this relay, the terminal 18 with the second delay sensor 17 in its first, non-energized position and the terminal 18 with the second input of the OR gate 22 in its second switching position and with a warning light trained warning device 25 connects.
  • the second connection of the warning device 25 is grounded.
  • the mode of operation of the exemplary embodiment shown in FIG. 1 will be explained below with reference to the signal diagram shown in FIG. 2. It essentially consists in first checking whether a trigger signal is present at the output of the evaluation circuit 11, although the second delay sensor 17 is not a critical delay recognized and is therefore open. In this case, a signal U19 is generated at the output of the AND gate 19, the signal length of which corresponds to that of the triggering signal at the output of the evaluation circuit 11 when the second delay sensor 17 is not addressed. This signal U19 represents an error signal since, due to the lower trigger threshold of the second delay sensor 17, the latter should respond first or at least simultaneously in any case. The signal U19 appears at the output of the time delay element by the amount t . delayed as signal U20.
  • This time t c indicates the limit value below which faulty trigger signals are still recognized as interference signals that should not be registered. This is the case in the first case of a signal U19 shown. In the second case illustrated, however, the signal U19 is longer than the time t o , so that the signals U19 and U20 overlap, which leads to an output signal U21 at the output of the AND gate 21.
  • This signal passes through the OR gate 22 excites the winding of the relay 23, 24 so that its switch 24 is placed in its second switching position. In this second switching position, on the one hand the warning device 25 or warning lamp is switched on and at the same time the power supply to the output amplifier 12 is interrupted, so that any further triggering of a restraint system is prevented from this point in time.
  • a semiconductor switch with self-holding effect such as. B. a thyristor or a corresponding self-holding semiconductor circuit.
  • a delay switch can of course also be used occur, which is normally closed and opened if a delay threshold is exceeded.
  • An output could be enabled, for example, by the negative voltage signal generated in the event of a delay.

Abstract

Es wird eine Schaltungsanordnung zur Registrierung von fehlerhaften Auslösesignalen für ein Rückhaltesystem, insbesondere ein Airbag- oder ein Gurtstraffersystem in einem Fahrzeug vorgeschlagen, wobei ein aus einem ersten Verzögerungssensor (10) sowie einer Auswerteschaltung (11) bestehender Auslösekreis ein Auslösesignal bei einer unfallbedingten Verzögerung erzeugt. Dieses Auslösesignal wird jedoch nur bei gleichzeitigem Ansprechen eines zweiten, im wesentlichen aus einem zweiten Verzögerungssensor (17) bestehenden Auslösekreises wirksam und löst das Rückhaltesystem aus. Eine Überwachungsschaltung (19) zur Überwachung des Auftretens eines Auslösesignals bei gleichzeitigem Nicht-Ansprechen des zweiten Auslösekreises (17) löst gegebenenfalls eine Warneinrichtung (25) aus die den Fahrer des Fahrzeugs über die genannte Fehlfunktion informiert.A circuit arrangement for registering faulty trigger signals for a restraint system, in particular an airbag or belt tensioner system in a vehicle, is proposed, a trigger circuit consisting of a first delay sensor (10) and an evaluation circuit (11) generating a trigger signal in the event of an accident-related delay. However, this trigger signal is only effective when a second trigger circuit, consisting essentially of a second delay sensor (17), responds simultaneously and triggers the restraint system. A monitoring circuit (19) for monitoring the occurrence of a trigger signal when the second trigger circuit (17) does not respond at the same time triggers a warning device (25) which informs the driver of the vehicle of the malfunction mentioned.

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einer Schaltungsanordnung- zur Registrierung von fehlerhaften Auslösesignalen für ein Rückhaltesystem in einem Fahrzeug. Solche üblicherweise als Air bag oder Gurtstraffer ausgebildeten Rückhaltesysteme sind z. B. aus der US-A-3622974, der US-A-3874695 sowie aus ATZ Automobiltechnische Zeitschrift 84 (1982) 2, Seite 77 bis 83 bekannt. Dabei erfolgt eine Auslösung des Rückhaltesystems über einen Zündkreis, wenn das durch wenigstens einen Verzögerungssensor erfaßte Verzögerungssignal vorgeschriebene Bedingungen erfüllt, die bei einer unfallbedingten Verzögerung gegeben sind.The invention is based on a circuit arrangement for registering faulty trigger signals for a restraint system in a vehicle. Such restraint systems, usually designed as air bags or belt tensioners, are e.g. B. from US-A-3622974, US-A-3874695 and ATZ Automobiltechnische Zeitschrift 84 (1982) 2, pages 77 to 83 known. The restraint system is triggered via an ignition circuit if the deceleration signal detected by at least one deceleration sensor fulfills the prescribed conditions that exist in the event of an accidental deceleration.

Aus der EP-A-22146 ist eine Schaltungsanordnung nach der Gattung des Hauptanspruchs bekannt, die jedoch dazu dient, bei ausgelöstem Rückhaltesystem nachträglich rekonstruieren zu können, worauf die Fehlauslösung zurückzuführen war. Fehlerhafte Auslösesignale eines Auslösekreises, die nicht zu einer Auslösung des Rückhaltesystems führen, werden nicht erfaßt.From EP-A-22146 a circuit arrangement according to the preamble of the main claim is known, which, however, serves to be able to subsequently reconstruct when the restraint system is triggered, after which the faulty triggering was attributable. Faulty trigger signals from a trigger circuit that do not trigger the restraint system are not recorded.

Schließlich ist aus der EP-A-11680 eine Schaltungsanordnung zur Überprüfung von Auslösesignalen bekannt, wobei ein Verzögerungssignal durch die Schaltung simuliert und ein entsprechendes Auslösesignal durch vorgegebene Prüfschritte getestet wird. Dabei wird die Auslösung des Rückhaltesystems während des Testprogramms verhindert. Durch den Verzögerungssensor erzeugte fehlerhafte Auslösesignale werden nicht überprüft.Finally, a circuit arrangement for checking trigger signals is known from EP-A-11680, a delay signal being simulated by the circuit and a corresponding trigger signal being tested by predetermined test steps. This prevents the restraint system from being triggered during the test program. Faulty trigger signals generated by the delay sensor are not checked.

Vorteile der ErfindungAdvantages of the invention

Die erfindungsgemäBe Schaltungsanordnung mit den kennzeichnenden Merkmalen des Hauptanspruchs hat den Vorteil, daß fehlerhafte, durch einen Verzögerungssensor bewirkte Auslösesignale eines Auslösekreises bei gleichzeitiger Verhinderung einer Fehlauslösung des Rückhaltesystems dem Fahrer des Fahrzeugs zuverlässig gemeldet werden.The circuit arrangement according to the invention with the characterizing features of the main claim has the advantage that faulty trigger signals from a trigger circuit caused by a delay sensor are reliably reported to the driver of the vehicle while preventing a false triggering of the restraint system.

Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen der im Hauptanspruch angegebenen Schaltungsanordnung möglich. Besonders vorteilhaft ist die zeitliche Überwachung fehlerhafter Auslösesignale durch ein Zeitglied, insbesondere ein Zeitverzögerungsglied. Dadurch wird verhindert, daß sehr kurze Störimpulse bereits zur Aktivierung der Warneinrichtung fuhren.Advantageous further developments and improvements of the circuit arrangement specified in the main claim are possible through the measures listed in the subclaims. The temporal monitoring of faulty trigger signals by a timing element, in particular a time delay element, is particularly advantageous. This prevents very short interference pulses already leading to the activation of the warning device.

Zeichnungdrawing

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen Figur 1 eine schaltungsmäßige Ausgestaltung eines Ausführungsbeispiels und Figur 2 ein Signaldiagramm zur Erläuterung der Wirkungsweise.An embodiment of the invention is shown in the drawing and explained in more detail in the following description. FIG. 1 shows a circuit configuration of an exemplary embodiment and FIG. 2 shows a signal diagram to explain the mode of operation.

Beschreibung des AusführungsbeispielsDescription of the embodiment

Das Ausgangssignal eines Verzögerungssensors 10 ist einer Auswerteschaltung 11 zugeführt, die im Falle einer unfallbedingten Verzögerung ein Auslösesignal einem Ausgangsverstärker 12 zuführt. Dessen Ausgang steuert zwei Zündeinrichtungen 15, 16, deren zweiter Anschluß an Masse liegt. Durch die Zündeinrichtungen 15, 16 werden chemische Treibladungen in Rückhaltesystemen, wie z. B. Airbag oder Gurtstraffer, gezündet. Durch diese wird entweder der Airbag aufgeblasen oder der Gurtstraffer angezogen.The output signal of a delay sensor 10 is fed to an evaluation circuit 11 which, in the event of an accident-related delay, supplies a trigger signal to an output amplifier 12. Its output controls two ignition devices 15, 16, the second connection of which is connected to ground. Through the ignition devices 15, 16 chemical propellant charges in restraint systems, such as. B. airbag or belt tensioner, ignited. These either inflate the airbag or tighten the belt tensioner.

Zur Erhöhung der Auslosesicherheit ist ein zweiter Auslösekreis vorgesehen, der im wesentlichen aus einem zweiten Verzögerungssensor 17 besteht, der vorzugsweise als Quecksilberschalter ausgebildet ist, wie er in der EP-A-22146 näher beschrieben ist. Dieser zweite Verzögerungssensor 17 weist insbesondere einen geringeren Auslöseschwellwert auf und verbindet bei Überschreiten des Schwellwerts die Spannungsversorgung zwischen einer spannungsführenden Klemme 18 und dem Ausgangsverstärker 12. Anstelle eines Quecksilberschalters kann natürlich auch ein aufwendigerer zweiter Auslösekreis treten. Wesentlich ist, daß die Auslösung des oder der Rückhaltesysteme nur dann erfolgt, wenn sowohl am Ausgang der Auswerteschaltung 11 ein Auslösesignal erzeugt wird, wie auch der zweite Verzögerungssensor das Überschreiten einer Verzögerungsschwelle erkennt.To increase the safety against tripping, a second tripping circuit is provided, which essentially consists of a second delay sensor 17 exists, which is preferably designed as a mercury switch, as described in more detail in EP-A-22146. This second delay sensor 17 has, in particular, a lower trigger threshold value and connects the voltage supply between a voltage-carrying terminal 18 and the output amplifier 12 when the threshold value is exceeded. Instead of a mercury switch, a more complex second trigger circuit can of course also occur. It is essential that the restraint system or restraint systems are triggered only when a trigger signal is generated both at the output of the evaluation circuit 11 and when the second delay sensor detects that a delay threshold has been exceeded.

Die bis hierher beschriebene Anordnung 10 - 18 ist aus dem eingangs angegebenen Stand der Technik bekannt und dort näher beschrieben, so daß hier auf eine detailliertere Angabe des Auslösemechanismus verzichtet werden kann.The arrangement 10 - 18 described so far is known from the prior art specified at the outset and is described in more detail there, so that the trigger mechanism can be omitted in more detail here.

Der Ausgang der Auswerteschaltung 11 ist einem Eingang eines Und-Gatters 19 zugeführt, während der zweite Eingang des Und-Gatters 19 mit dem Ausgang eines Inverters 13 verbunden ist. Dieser fragt ab, ob der zweite Verzögerungssensor 17 angesprochen hat. Der Ausgang des Und-Gatters 19 ist sowohl über ein Zeitverzögerungsglied 20 mit einem ersten Eingang eines zweiten Und-Gatters 21, wie auch direkt mit dessen zweiten Eingang verbunden. Ausgangsseitig ist das Und-Gatter 21 über ein Oder-Gatter 22 mit der Magnetwicklung 23 eines Relais verbunden. Durch die Magnetwicklung 23 wird ein Umschaltkontakt 24 dieses Relais gesteuert, der in seiner ersten, nicht erregten Stellung die Klemme 18 mit dem zweiten Verzögerungssensor 17 und in seiner zweiten Schaltstellung die Klemme 18 mit dem zweiten Eingang des Oder-Gatters 22 sowie mit einer als Warnleuchte ausgebildeten Warneinrichtung 25 verbindet. Der zweite Anschluß der Warneinrichtung 25 liegt an Masse.The output of the evaluation circuit 11 is fed to an input of an AND gate 19, while the second input of the AND gate 19 is connected to the output of an inverter 13. This asks whether the second deceleration sensor 17 has responded. The output of the AND gate 19 is connected via a time delay element 20 to a first input of a second AND gate 21, as well as directly to its second input. On the output side, the AND gate 21 is connected to the magnetic winding 23 of a relay via an OR gate 22. The magnetic winding 23 controls a changeover contact 24 of this relay, the terminal 18 with the second delay sensor 17 in its first, non-energized position and the terminal 18 with the second input of the OR gate 22 in its second switching position and with a warning light trained warning device 25 connects. The second connection of the warning device 25 is grounded.

Die Wirkungsweise des in Figur 1 dargestellten Ausführungsbeispiels soll im folgenden anhand des in Figur 2 dargestellten Signaldiagramms erläutert werden. Sie besteht im wesentlichen darin, daß zunächst überprüft wird, ob ein Auslösesignal am Ausgang der Auswerteschaltung 11 vorliegt, obwohl der zweite Verzögerungssensor 17 keine kritische Verzögerung erkannt hat und daher geöffnet ist. In diesem Fall wird am Ausgang des Und-Gatters 19 ein Signal U19 erzeugt, dessen Signallänge der des Auslöseeignals am Ausgang der Auswerteschaltung 11 bei nicht angesprochenem zweiten Verzögerungssensor 17 entspricht. Dieses Signal U19 stellt ein Fehlersignal dar, da infolge der niedrigeren Auslöseschwelle des zweiten Verzögerungssensors 17 dieser in jedem Falle zuerst oder zumindest gleichzeitig ansprechen sollte. Das Signal U19 erscheint am Ausgang des Zeitverzögerungsglieds um den Betrag t. verzögert als Signal U20. Diese Zeit tc gibt den Grenzwert an, unterhalb dessen fehlerhafte Auslösesignale noch als Störsignale erkannt werden, die nicht registriert werden sollen. Dies ist beim ersten dargestellten Fall eines Signals U19 gegeben. Beim zweiten dargestellten Fall ist das Signal U19 jedoch länger als die Zeit to, so daß eine Überlappung der Signale U19 und U20 entsteht, was zu einem Ausgangssignal U21 am Ausgang des Und-Gatters 21 führt-Durch dieses Signal wird über das Oder-Gatter 22 die Wicklung des Relais 23, 24 erregt, so daß dessen Umschalter 24 in seine zweite Schaltstellung gelegt wird. In dieser zweiten Schaltstellung wird zum einen die Warneinrichtung 25 bzw. Warnlampe eingeschaltet und gleichzeitig die Stromversorgung zum Ausgangsverstärker 12 unterbrochen, so daß jede weitere Auslösung eines Rückhaltesystems ab diesem Zeitpunkt verhindert wird. Durch die Rückführung des positiven Spannungssignals zum zweiten Eingang des Oder-Gatters 22 wird eine Selbsthaltewirkung des Relais 23, 24 erreicht, so daß die Warneinrichtung 25 so lange eingeschaltet bleibt, bis die Spannungsversorgung durch Ausschaltung der Zündung des Fahrzeugs wieder unterbrochen wird. Die Warneinrichtung 25 informiert den Fahrer darüber, daß ein fehlerhaftes Auslösesignal erzeugt wurde, und die Funktionssicherheit des Rückhaltesystems nicht mehr gesichert ist. Das System wäre demzufolge zu überprüfen bzw. auszutauschen.The mode of operation of the exemplary embodiment shown in FIG. 1 will be explained below with reference to the signal diagram shown in FIG. 2. It essentially consists in first checking whether a trigger signal is present at the output of the evaluation circuit 11, although the second delay sensor 17 is not a critical delay recognized and is therefore open. In this case, a signal U19 is generated at the output of the AND gate 19, the signal length of which corresponds to that of the triggering signal at the output of the evaluation circuit 11 when the second delay sensor 17 is not addressed. This signal U19 represents an error signal since, due to the lower trigger threshold of the second delay sensor 17, the latter should respond first or at least simultaneously in any case. The signal U19 appears at the output of the time delay element by the amount t . delayed as signal U20. This time t c indicates the limit value below which faulty trigger signals are still recognized as interference signals that should not be registered. This is the case in the first case of a signal U19 shown. In the second case illustrated, however, the signal U19 is longer than the time t o , so that the signals U19 and U20 overlap, which leads to an output signal U21 at the output of the AND gate 21. This signal passes through the OR gate 22 excites the winding of the relay 23, 24 so that its switch 24 is placed in its second switching position. In this second switching position, on the one hand the warning device 25 or warning lamp is switched on and at the same time the power supply to the output amplifier 12 is interrupted, so that any further triggering of a restraint system is prevented from this point in time. By returning the positive voltage signal to the second input of the OR gate 22, a self-holding effect of the relay 23, 24 is achieved, so that the warning device 25 remains switched on until the voltage supply is interrupted again by switching off the ignition of the vehicle. The warning device 25 informs the driver that an incorrect trigger signal has been generated and the functional safety of the restraint system is no longer ensured. The system would therefore have to be checked or replaced.

Anstelle eines Relais 23, 24 kann natürlich auch ein Halbleiterschalter mit Selbsthalteeffekt, wie z. B. ein Thyristor oder eine entsprechende, selbsthaltende Halbleiterschaltung treten.Instead of a relay 23, 24, of course, a semiconductor switch with self-holding effect, such as. B. a thyristor or a corresponding self-holding semiconductor circuit.

Anstelle eines im Normalfall geöffneten und bei Überschreitung einer vorgebbaren Verzögerung geschlossenen, als Verzögerungsschalter ausgebildeten Verzögerungssensors 17 kann natürlich auch ein Verzögerungsschalter treten, der im Normalfall geschlossen und im Falle der Überschreitung einer Verzögerungsschwelle geöffnet wird. Durch das im Verzögerungsfall erzeugte negative Spannungssignal könnte beispielsweise ein Ausgang freigegeben werden.Instead of a delay sensor 17, which is normally open and closed when a predefinable delay is exceeded and is designed as a delay switch, a delay switch can of course also be used occur, which is normally closed and opened if a delay threshold is exceeded. An output could be enabled, for example, by the negative voltage signal generated in the event of a delay.

Claims (6)

1. Schaltungsanordnung zur Registrierung von fehlerhaften Auslösesignalen für ein Rückhaltesystem in einem Fahrzeug, mit einem aus einem ersten Verzögerungssensor sowie einer Auswerteschaltung bestehenden Auslösekreis zur Erzeugung eines Auslösesignals bei einer unfallbedingten Verzögerung, wobei dieses Auslösesignal nur bei gleichzeitigem Ansprechen eines zweiten Auslösekreises das Rückhaltesystem auslöst, dadurch gekennzeichnet, daß eine Überwachungsschaltung 19 zur Überwachung des Auftretens eines Auslöseeignals bei gleichzeitigem Nicht-Ansprechen des zweiten Auslösekreises 17 vorgesehen ist, durch die eine Warneinrichtung 25 einschaltbar ist.1.Circuit arrangement for registering faulty trigger signals for a restraint system in a vehicle, with a trigger circuit consisting of a first deceleration sensor and an evaluation circuit for generating a trigger signal in the event of an accident-related delay, this trigger signal only triggering the restraint system when a second trigger circuit responds simultaneously characterized in that a monitoring circuit 19 is provided for monitoring the occurrence of a trigger signal when the second trigger circuit 17 does not respond, by means of which a warning device 25 can be switched on. 2. Schaltungsanordnung nach Anspruch 1, dadurch gekennzeichnet, daß die Überwachungeschaltung 19 ein durch das Auslöseeignal getriggertes Zeitglied 20 aufweist, wobei die Warneinrichtung nur bei Überschreiten der Haltezeit des Zeitglieds 20 durch die Dauer des Auslösesignals eingeschaltet wird.2. Circuit arrangement according to claim 1, characterized in that the monitoring circuit 19 has a timer 20 triggered by the trigger signal, the warning device being switched on only when the holding time of the timer 20 is exceeded by the duration of the trigger signal. 3. Schaltungsanordnung nach Anspruch 2, dadurch gekennzeichnet, daß das Zeitglied 20 ein Zeitverzögerungsglied ist, dessen Ausgangssignal bei gleichzeitigem Vorliegen des Auslösesignals die Warneinrichtung 25 einschaltet.3. Circuit arrangement according to claim 2, characterized in that the timing element 20 is a time delay element, the output signal of which switches on the warning device 25 in the presence of the trigger signal. 4. Schaltungsanordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Einschaltung der Warneinrichtung 25 über eine Selbsthalteschaltung 22 bis 24 erfolgt.4. Circuit arrangement according to one of the preceding claims, characterized in that the warning device 25 is switched on via a latch circuit 22 to 24. 5. Schaltungsanordnung nach Anspruch 4, dadurch gekennzeichnet, daß die Selbsthalteschaltung ein selbsthaltendes Relais 22 bis 24 oder ein Thyristor ist.5. Circuit arrangement according to claim 4, characterized in that the latch circuit is a latch relay 22 to 24 or a thyristor. 6. Schaltungsanordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß zur Einschaltung der Warneinrichtung 25 ein Umschalter 24 vorgesehen ist, durch den beim Einschalten der Warneinrichtung 25 gleichzeitig die Versorgungsspannung zum Auslösekreis 10 bis 12, 17 oder der Auslösekreis selbst unterbrochen wird.6. Circuit arrangement according to one of the preceding claims, characterized in that a switch 24 is provided for switching on the warning device 25, through which when the warning device 25 is switched on the supply voltage to the trip circuit 10 to 12, 17 or the trip circuit itself is interrupted.
EP85106768A 1984-07-10 1985-06-01 Circuit for detecting erroneous triggering signals for a restraint system Withdrawn EP0167792A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843425281 DE3425281A1 (en) 1984-07-10 1984-07-10 CIRCUIT ARRANGEMENT FOR THE REGISTRATION OF ERRORATE TRIGGER SIGNALS FOR A RESTRAINT SYSTEM
DE3425281 1984-07-10

Publications (1)

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EP0167792A1 true EP0167792A1 (en) 1986-01-15

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EP85106768A Withdrawn EP0167792A1 (en) 1984-07-10 1985-06-01 Circuit for detecting erroneous triggering signals for a restraint system

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US (1) US4641041A (en)
EP (1) EP0167792A1 (en)
JP (1) JPS6124648A (en)
DE (1) DE3425281A1 (en)
ES (1) ES8701630A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2606897A1 (en) * 1986-11-14 1988-05-20 Bosch Gmbh Robert METHOD AND DEVICE FOR MONITORING ADJUSTING DEVICES CONTROLLED BY A COMPUTER, SUCH AS ANTI-LOCKING SYSTEMS, AIR BAGS OR BELT TENSIONERS OR THE LIKE
EP0305656A2 (en) * 1987-08-31 1989-03-08 Deutsche Aerospace AG Shock sensor for a motor vehicle
WO1989011986A1 (en) * 1988-06-09 1989-12-14 Robert Bosch Gmbh Apparatus and method for tripping a safety system for the protection of an occupant of a vehicle
EP0662407A1 (en) * 1994-01-11 1995-07-12 Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho Device for controlling acceleration sensor
US5788273A (en) * 1991-02-11 1998-08-04 Robert Bosch Gmbh Apparatus and method for tripping a safety system for the protection of an occupant of a vehicle
DE102015219402A1 (en) 2015-09-25 2017-03-30 Continental Automotive Gmbh Method for operating an occupant protection system and corresponding control device and motor vehicle
WO2018014890A1 (en) 2016-07-21 2018-01-25 Continental Automotive Gmbh Method for operating a safety-critical control device for a motor vehicle, and corresponding motor vehicle

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3615650A1 (en) * 1986-05-09 1987-11-12 Audi Ag Method for checking a motor vehicle safety system
DE3616826C1 (en) * 1986-05-17 1987-07-02 Daimler Benz Ag Device for automatically switching on a hazard warning system
ES2020959B3 (en) * 1986-06-27 1991-10-16 Audi Ag PROVISION FOR THE SUPPLY OF VOLTAGE TO ELECTRICAL COMPONENTS
DE3643946A1 (en) * 1986-12-22 1988-06-23 Vdo Schindling ELECTRICAL SET POINT
DE3726145C1 (en) * 1987-08-06 1988-11-24 Bosch Gmbh Robert Accelerometers, in particular for triggering occupant protection devices in motor vehicles in the event of an accident
JPH0416333Y2 (en) * 1987-09-04 1992-04-13
JPH0439629Y2 (en) * 1987-09-04 1992-09-17
DE3816591A1 (en) * 1988-05-16 1989-11-23 Messerschmitt Boelkow Blohm Device for triggering a passive safety device
DE3816587A1 (en) * 1988-05-16 1989-11-23 Messerschmitt Boelkow Blohm DEVICE FOR TRIGGERING A PASSIVE SAFETY DEVICE
DE3816590A1 (en) * 1988-05-16 1989-11-23 Messerschmitt Boelkow Blohm Device for triggering a passive safety device
DE3816588A1 (en) * 1988-05-16 1989-11-23 Messerschmitt Boelkow Blohm Device for triggering a passive safety device
JPH0735142B2 (en) * 1988-05-24 1995-04-19 日本電装株式会社 Failure determination device for vehicle occupant protection system
JPH0639245B2 (en) * 1988-06-01 1994-05-25 日本電装株式会社 Occupant protection device operating status recording device
JP2716554B2 (en) * 1988-08-26 1998-02-18 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング Electronic device and method of operation
DE8915345U1 (en) * 1988-08-26 1990-06-07 Robert Bosch Gmbh, 7000 Stuttgart, De
WO1990002673A1 (en) * 1988-09-09 1990-03-22 Robert Bosch Gmbh Apparatus for triggering a vehicle safety system
EP0438391A1 (en) * 1988-10-12 1991-07-31 Robert Bosch Gmbh Triggering device for a vehicle occupant restraining system
US4943690A (en) * 1989-03-06 1990-07-24 Fifth Dimension, Inc. Position insensitive shock sensor with closure delay
JPH0742878Y2 (en) * 1989-04-14 1995-10-04 日本精工株式会社 Occupant protection device failure detection device
JP2698454B2 (en) * 1989-11-14 1998-01-19 アスコ株式会社 Detector control circuit
US5194755A (en) * 1991-03-04 1993-03-16 Ford Motor Company Airbag triggering system
US5221918A (en) * 1991-08-12 1993-06-22 Saturn Corporation Back-up warning lamp useful for supplemental inflatable restraint systems
JP2773486B2 (en) * 1991-09-12 1998-07-09 日産自動車株式会社 Occupant protection control device
JPH0580921U (en) * 1992-03-31 1993-11-02 日本電気ホームエレクトロニクス株式会社 Occupant protection device
US5737961A (en) * 1996-03-26 1998-04-14 Trw Inc. Method and apparatus for detecting operational failure of a digital accelerometer
JPH10222402A (en) * 1997-02-12 1998-08-21 Nissan Motor Co Ltd Controller for vehicle
DE19937151B4 (en) * 1999-08-06 2006-11-02 Daimlerchrysler Ag Active occupant restraint system with ring and / or stitch-shaped ignition bus cable
US6296273B1 (en) 2000-02-22 2001-10-02 David G. Lewallen Automobile airbag deactivation system
US6860357B2 (en) * 2001-05-18 2005-03-01 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Motor vehicle that acquires driving power for running from high voltage power supply
DE10147732A1 (en) * 2001-09-27 2003-05-08 Bayerische Motoren Werke Ag Method for triggering a vehicle occupant restraint
EP2461342B1 (en) * 2010-12-06 2015-01-28 Siemens Aktiengesellschaft Error-proof switching module
CN105905055B (en) * 2016-03-02 2018-11-09 深圳市银盾科技开发有限公司 Automobile intelligent accumulator

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2406256A1 (en) * 1973-02-14 1974-08-22 Eaton Corp ELECTRICAL CONTROL CIRCUIT FOR A SAFETY DEVICE FOR MOTOR VEHICLE OCCUPANTS
GB1368899A (en) * 1971-08-27 1974-10-02 Technar Inc Sensor assembly for use in a vehicle equipped with a gas bag restraint system
US3921129A (en) * 1971-05-10 1975-11-18 Toyo Kogyo Co Malfunction preventive system for use in an air bag incorporating a sensor for detecting the collision speed of a vehicle
US4287431A (en) * 1977-09-20 1981-09-01 Nippondenso Co., Ltd. Electric control circuit for safety apparatus in automotive vehicles
US4366465A (en) * 1981-10-02 1982-12-28 Ford Motor Company False failure detection prevention in an air bag diagnostic system

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3622974A (en) * 1970-05-11 1971-11-23 Gen Motors Corp Air cushion actuation and failure warning circuit
US3762495A (en) * 1970-07-04 1973-10-02 Nissan Motor Method and device for triggering motor vehicle safety mechanisms
US3629816A (en) * 1970-08-10 1971-12-21 Gen Motors Corp Air cushion actuation and monitoring circuit
US3668627A (en) * 1970-09-21 1972-06-06 Gen Motors Corp Air cushion actuation and monitoring circuit
JPS5425294B1 (en) * 1971-03-16 1979-08-27
US3851305A (en) * 1971-05-28 1974-11-26 Nissan Motor Collision detecting system for a motor vehicle
US3889232A (en) * 1971-08-27 1975-06-10 Technar Inc Sensor assembly for use in a vehicle equipped with a gas bag restraint system
US3949357A (en) * 1972-02-09 1976-04-06 Nissan Motor Co., Ltd. Operation recorder for motor vehicle safety device
JPS5147213B2 (en) * 1972-02-09 1976-12-14
DE2207831A1 (en) * 1972-02-19 1973-08-23 Dynamit Nobel Ag ELECTRONIC SENSOR FOR TRIGGERING SAFETY DEVICES IN THE EVENT OF A VEHICLE IMPACT
US4059822A (en) * 1972-04-10 1977-11-22 Toyota Jidosha Kogyo Kabushiki Kaisha Fault detecting system for vehicle occupants protective apparatus
DE2222038C3 (en) * 1972-05-05 1978-07-06 Messerschmitt-Boelkow-Blohm Gmbh, 8000 Muenchen Test circuit for the triggering device of a safety device used to protect the occupants of a vehicle during an accident
US3874695A (en) * 1972-08-01 1975-04-01 Nissan Motor Vehicle safety device actuation arrangement
JPS5321586B2 (en) * 1973-07-06 1978-07-04
US4016426A (en) * 1974-11-29 1977-04-05 Nissan Motor Co., Ltd. Air cushion actuation and malfunction detection and recording circuit
DE2614491C3 (en) * 1976-04-03 1980-07-10 Messerschmitt-Boelkow-Blohm Gmbh, 8000 Muenchen Circuit arrangement for monitoring the operational readiness of the triggering organs of a safety device for vehicles
JPS5327933A (en) * 1976-08-24 1978-03-15 Honda Motor Co Ltd Automotive air-bag activating apparatus
JPS5823263B2 (en) * 1977-09-08 1983-05-13 株式会社デンソー Air bag device activation device
DE2808872C2 (en) * 1978-03-02 1986-01-23 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Trigger circuit for an occupant protection device in motor vehicles
DE2851333A1 (en) * 1978-11-28 1980-06-12 Bosch Gmbh Robert TEST CIRCUIT FOR THE RELEASE DEVICE OF A SAFETY DEVICE THAT PROTECTS THE INSURANCE OF A VEHICLE DURING AN ACCIDENT
DE2924252A1 (en) * 1979-06-15 1980-12-18 Bosch Gmbh Robert CIRCUIT ARRANGEMENT FOR REGISTERING MALFUNCTIONS FOR AT LEAST ONE OF THE PROTECTION OF THE VEHICLE IN A ACCIDENT SAFETY DEVICE
FR2504474A1 (en) * 1981-04-28 1982-10-29 Renault METHOD AND SYSTEM FOR COLLISION DETECTION AND CONTROL OF SECURITY DEVICES

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3921129A (en) * 1971-05-10 1975-11-18 Toyo Kogyo Co Malfunction preventive system for use in an air bag incorporating a sensor for detecting the collision speed of a vehicle
GB1368899A (en) * 1971-08-27 1974-10-02 Technar Inc Sensor assembly for use in a vehicle equipped with a gas bag restraint system
DE2406256A1 (en) * 1973-02-14 1974-08-22 Eaton Corp ELECTRICAL CONTROL CIRCUIT FOR A SAFETY DEVICE FOR MOTOR VEHICLE OCCUPANTS
US4287431A (en) * 1977-09-20 1981-09-01 Nippondenso Co., Ltd. Electric control circuit for safety apparatus in automotive vehicles
US4366465A (en) * 1981-10-02 1982-12-28 Ford Motor Company False failure detection prevention in an air bag diagnostic system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
INGENIEURS DE L'AUTOMOBILE, Nr. 6, 1982, Seiten 69-77, Paris, FR; W. SUCHOWERSKYJ: "Evolution en matière de détecteurs de choc" *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2606897A1 (en) * 1986-11-14 1988-05-20 Bosch Gmbh Robert METHOD AND DEVICE FOR MONITORING ADJUSTING DEVICES CONTROLLED BY A COMPUTER, SUCH AS ANTI-LOCKING SYSTEMS, AIR BAGS OR BELT TENSIONERS OR THE LIKE
EP0305656A2 (en) * 1987-08-31 1989-03-08 Deutsche Aerospace AG Shock sensor for a motor vehicle
DE3729020A1 (en) * 1987-08-31 1989-03-16 Messerschmitt Boelkow Blohm IMPACT SENSOR FOR MOTOR VEHICLES
EP0305656A3 (en) * 1987-08-31 1989-09-06 Messerschmitt-Bolkow-Blohm Gesellschaft Mit Beschrankter Haftung Shock sensor for a motor vehicle
WO1989011986A1 (en) * 1988-06-09 1989-12-14 Robert Bosch Gmbh Apparatus and method for tripping a safety system for the protection of an occupant of a vehicle
US5788273A (en) * 1991-02-11 1998-08-04 Robert Bosch Gmbh Apparatus and method for tripping a safety system for the protection of an occupant of a vehicle
EP0662407A1 (en) * 1994-01-11 1995-07-12 Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho Device for controlling acceleration sensor
US5538284A (en) * 1994-01-11 1996-07-23 Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho Device for controlling acceleration sensor
DE102015219402A1 (en) 2015-09-25 2017-03-30 Continental Automotive Gmbh Method for operating an occupant protection system and corresponding control device and motor vehicle
DE102015219402B4 (en) 2015-09-25 2022-05-25 Continental Automotive Gmbh Method for operating an occupant protection system and corresponding control unit and motor vehicle
WO2018014890A1 (en) 2016-07-21 2018-01-25 Continental Automotive Gmbh Method for operating a safety-critical control device for a motor vehicle, and corresponding motor vehicle
US10899296B2 (en) 2016-07-21 2021-01-26 Continental Automotive Gmbh Method for operating a safety-critical controller for a motor vehicle and corresponding motor vehicle

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JPS6124648A (en) 1986-02-03
DE3425281C2 (en) 1993-02-11
ES8701630A1 (en) 1986-12-01
US4641041A (en) 1987-02-03
DE3425281A1 (en) 1986-01-16
ES544996A0 (en) 1986-12-01

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